radiant heat

American  

noun

Thermodynamics.

1. heat energy transmitted by electromagnetic waves in contrast to heat transmitted by conduction or convection.

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radiant heat British  

noun

1. heat transferred in the form of electromagnetic radiation rather than by conduction or convection; infrared radiation

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Etymology

Origin of radiant heat

First recorded in 1500–10

Example Sentences

And there’s “scorch,” at the low end, when radiant heat, not flame, kills the crown but leaves dead foliage in place.

From Los Angeles Times • Mar. 13, 2026

The radiant heat installer and electrician were happy.

From Seattle Times • Dec. 25, 2023

The researchers investigated the complex interplay between the transfer of radiant heat and the thermochemical reaction.

From Science Daily • Oct. 27, 2023

Four fireplaces, beamed ceilings, radiant heat, open floor plan, designer kitchen with Viking appliances plus large window with desert views; 3,733 square feet.

From Washington Times • Oct. 26, 2023

Rock salt is one of the best non-absorbents of radiant heat, allowing nearly the whole of the rays of heat to pass through unobstructed.

From Lectures on Ventilation Being a Course Delivered in the Franklin Institute of Philadelphia by Leeds, Lewis W.